Swivel-hook.



M. J. DUNN.

SWIVEL HOOK.

APPLICATION rILBp 001. 26, 1911.

Patented Aug. 6, 1912.

ATTEIRNEY,

WTTFE FTATFfi PATENT @FFTQE.

MATTHEW J. DUNN, OF PROVIDENCE, RHODE ISLAND.

SWIVEL-HOOK.

To all whom it may concern.

Be it known that T, MATTHEW J. DUNN, a citizen of the United States,residing at Providence, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements inSwivel-Hooks, of which the following is a specification.

My invention relates to high grade swivel hooks and has for itsessential objects the avoidance of the use of solder at the points ofmaximum strain,the thorough protection of the operating spring againstdislodgment, improved action of the tongue, inexpensiveness ofconstruction, and sightliness.

To the above ends primarily my invention consists in such novel partsand combinations of parts as fall within the scope of. the appendedclaim.

In the accompanying drawings which form a part of this specificationFigures 1 and 2 are front and side elevations respectively of my novelswivel hook, Fig. 3, a section on line a; 00 of Fig. 2, Figs. t and 5plan and side elevations respectively of the hook blank, Fig. 6, adetail view of the spring, Fig. 7, a side elevation of the hook blankshowing one end engaged with the spring, Fig. 8, a like elevation ofblank engaged at both ends with the spring, Fig. 9, a side elevation ofthe barrel, and Fig. 10, a like elevation of the barrel and hook blankassembled.

Like reference characters indicate like parts throughout the views.

My novel swivel hook is thus constructed. A barrel A is drawn up fromthin metal comprising a substantially conical shaped body portion a, areduced cylindrical neck portion 0; and a terminal annular shoulder (4The top of the body is provided with the usual opening a to admit theoperative parts. Loose on the neck portion a is the collar B retained bythe shoulder a and the body portion a; and to the collar is attached theusual ring 6.

The hook blank is stamped up from a metal blank which, as shown in Figs.4 and Specification bf Letters Patent.

Application filed October 26, 1911.

Patented Aug. 6, 1912.

Serial No. 656,983.

5, consists of an oblong bar C provided upon its upper face at one endwith a longitudinal groove 0 and at its other end with a like groove 0opening into a curved recess 0 By reason of the stamping of the metalblank there are resultant ears (Z at each side of the groove 0, and ears(Z at each side of the groove 0'.

A spring is constructed which is shown in detail in Fig. 6. This is bentup from a spring wire and consists of a circular loop 6 terminating in ashort arm 6' and a long arm 6 the arms forming relatively to each otheran obtuse angle. The bar C is bent into a partial loop, as shown in Fig.8, with one of its ends adjacent the longer opposite end of the blank.The spring arms or ends 6 and 6 rest respectively in the grooves c andc, and the loop 6 of the spring is housed in the recess 0 The describedspring parts are held in position by swaging the ears (Z tightly inaround the arm 6', and the ears (Z snugly against the arm 0 The latterarm preferably extends clownwardly beyond the end of the bent blank andbears against the wall of the barrel. The looped blank C has itsconverging ends inserted through the opening a into the barrel A and isfixed therein by a rivet f passing through the body portion a of thebarrel and through an opening f in the blank C. The blank C is finallydiagonally sawed in the usual manner as at 9 whereby is formed the hookend H and the tongue I.

It will be noted that no pivot member for the tongue I is required inthe barrel wall, nor are trunnions necessary thereon. The entire pivotalaction of the tongues is in the circular loop 6. Furthermore the springmember is securely held against accidental dislodgment by its seat andattachment.

What I claim is In a swivel hook, the combination with a barrel, of ahook member comprising a shank and a hook, a rivet connecting anintermediate portion of the shank t0 the barrel said shank beingprovided with a recess, a tongue detached from the barrel bearingagainst the hook and extending within the In testimony whereof I haveaffixed my barrel adjacent the hook, and a spring comsignature inpresence of two witnesses. prising a loop and two arms, said 100p beinglocated in said recess and said arms being MATTHEW DUNN 5 fixed to theshank and tongue, and one of Witnesses:

said arms being extended to bear against the HoRA'rIo E. BELLOWS, innerface of the barrel. FRED W. PERKINS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

